当编得很好的钢丝辐条轮承受径向负载（如车手坐在自行车上）时，车轮与地面接触处附近会略有凹陷，其余部分则基本保持圆形。 所有辐条的张力都没有显著增加，轮毂正下方的辐条张力还有所降低。 对如何描述这种情形存在争议。 有人认为轮毂“站”在正下方那根张力减小的辐条上， 还有人认为轮毂“挂”在正上方那根张力较大的辐条上。
- Herlihy, David. Bicycle: the History. Yale University Press. 2004: 141 [2009-09-29]. ISBN 0-300-10418-9.
- Hansen Wheel and Wagon Shop. 2006 [2006-08-22]. （原始内容存档于2006-08-14）.
- PBO Spoke Technology. 2006 [2011-10-21]. （原始内容存档于2011-10-30）.
- Forester, John. Held Up By Downward Pull. American Wheelmen. August 1980.
- Whitt, Frank R.; David G. Wilson. Bicycling Science Second. Massachusetts Institute of Technology. 1982: 106–138. ISBN 0-262-23111-5.
- Ian Smith. Bicycle Wheel Analysis. [2008-12-31].
I conclude that it is perfectly reasonable to say that the hub stands on the lower spokes, and that it does not hang from the upper spokes.
- C.J. Burgoyne and R. Dilmaghanian. Bicycle Wheel as Prestressed Structure (pdf). Journal of Engineering Mechanics. March 1993, 119 (3): 439–455. ISSN 0733-9399. doi:10.1061/(asce)0733-9399(1993)119:3(439).
Only the spokes in contact with the ground, or near the ground, show significant strains.
- Brandt, Jobst. The Bicycle Wheel. Avocet. 1981: 12–20. ISBN 0-9607236-2-5.
- Wilson, David Gordon; Jim Papadopoulos. Bicycling Science Third. Massachusetts Institute of Technology. 2004: 389–390. ISBN 0-262-73154-1.
- Tom Fine. Hubs hang from the rim!. September 1998 [2010-03-16].
I still say, without any doubt, that the hub hangs from the upper spokes.
- Henri P. Gavin. Bicycle Wheel Spoke Patterns and Spoke Fatigue (pdf). ASCE Journal of Engineering Mechanics. August 1996, 122 (8): 736–742. doi:10.1061/(ASCE)0733-9399(1996)122:8(736).
- Kraig Willett. Hang or Stand?. BikeTech Review. 5 September 2004 [2010-03-16].
A little known semantic debate ... has been raging on the usenet newsgroups for quite some time. The point of contention in this debate is whether or not a loaded bicycle wheel "stands" on the bottom spokes or "hangs" from the top ones?
- Samuel K. Clark, V. E. Gough. Mechanics of Pneumatic Tires. U.S. Department of Transportation. 1981: 241.
The system of load transmission is analogous to that of a cycle wheel where the hub hangs by the steel wire spokes from the top of the rim, which is loaded at the bottom.
John Swanson. Performance of the Bicycle Wheel, A Method for Analysis (PDF). BikePhysics.com. 2006 [2012-06-25]. （原始内容 (PDF)存档于2012-09-15）.
Radial Stiffness: There's almost -no- vertical compliance in your wheel and people who insist that they can feel the vertical stiffness or “harshness” of a wheel are mistaken. The radial stiffness of a bicycle wheel is ~ 3-4000 N/mm. This equals a deflection of 0.1 mm under a 40 kg load. Sorry princess, but that gets obscured by the amount of deflection in the tires, fork, saddle, handlebar tape, frame, and even your gloves.
- Henri P. Gavin. Bicycle Wheel Spoke Patterns and Spoke Fatigue (PDF). ASCE Journal of Engineering Mechanics. 1996 [2012-06-25].
radial wheel stiffness (N/mm): 2500-5000
- Ian. Spoke Patterns. astounding.org.uk. 2002 [2012-06-25].
A radially spoked wheel is about 4.6% stiffer than a tangentially spoked one. Alternatively, if you apply 1000N (about 100kg, 220lb) to each of the wheels, the tangential (four-cross) spoked one deflects 0.0075mm (0.0003 inch) more than the radial spoked. Since the tyre is likely to deflect several millimetres at least (if 3mm, that's 400 times more deflection) I conclude the spoking is unlikely to make a discernible difference to the vertical stiffness of the wheel.
- Jobst Brandt. Sheldon Brown's Bicycle Glossary: Radial spoking. Sheldon Brown (bicycle mechanic). 1981 [2012-06-25].
There is no change in radial elasticity between a radial and crossed spoke wheel with the same components, other than the length of the spokes. A 290 mm spoke is 3% stiffer than a 300 mm spoke of the same type. Since spokes stretch elastically about 0.1mm on a hard bump (not ordinary road ripples), the elastic difference between the radial and cross-three wheel is 3% x 0.1mm = 0.003 mm. Copier paper is 0.075 mm thick, and if you can feel that when you ride over it on a glassy smooth concrete surface, please let me know. You have greater sensitivity than the lady in "the princess and the pea" fable.